TABLE 1.

Determination of variable regions in the rrl genes of the ECOR collection strains used in this study and E. coli K-12

Strain and locus	Sequence present ata:
	Helix 25			Helix 45		Helix 63		Helix 79		Helix 98
	I	II	III	I	II	I	II	I	II	I	II	III
K-12
rrlA	+				+		+	+				+
rrlB	+			+		+		+		+
rrlC	+			+			+	+				+
rrlD	+			+			+	+		+
rrlE	+			+		+		+				+
rrlG	+			+		+		+		+
rrlH	+			+			+	+				+
ECOR 10
rrlB	+			+		+		+		+
rrlC	+			+		+		+		+
rrlD	+				+	+		+		+
rrlG	+			+		+		+		+
rrlH	+			+		+		+				+
ECOR 24
rrlB	+			+		+		+				+
rrlC	+			+		+		+				+
rrlD	+			+		+		+		+
ECOR 35
rrlB		+		+			+		+		+
rrlC		+		+			+		+		+
rrlE		+		+			+		+		+
rrlG		+		+			+		+		+
ECOR 40
rrlB		+			+	+			+			+
rrlC		+			+	+			+			+
ECOR 52
rrlA		+			+		+	+			+
rrlC		+			+		+	+				+
rrlD		+			+		+	+				+
rrlE		+			+		+	+				+
A8190
rrlA			+		+	+		+		+
rrlC			+		+	+		+		+
rrlE			+		+	+		+		+
rrlG		+			+	+		+		+

^aA plus sign indicates the sequence found at the locus and helix in question.